JP2524266Y2 - Muffler support structure - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to a muffler support structure, and more particularly, to a technique for supporting a muffler on an engine-side member such as a rear end plate.

[Conventional technology]

Conventionally, as a technique for supporting a muffler on a member on the engine side, there is a technique disclosed in Japanese Utility Model Laid-Open No. 47824/1985. In this conventional example, a plate-shaped stay provided on the muffler is provided with A muffler support system is configured to be fixed to the rear end plate with bolts or the like.

[Problems to be solved by the invention]

Here, considering the working procedure when supporting the muffler by the configuration of the conventional example, since the exhaust pipe through which the exhaust gas from the engine is sent is connected in this type of muffler, the muffler is supported on the rear end plate. When connecting the muffler to the exhaust pipe or connecting the exhaust pipe to the exhaust manifold in a temporarily fixed state where the bolts etc. for fixing the stay to the rear end plate are loosened, stress is applied to the exhaust pipe. The muffler is fixed by tightening the bolts or the like without remaining.

In general, since the manufacturing accuracy of the exhaust pipe is not very high, in order to support the muffler by the above-described operation procedure, the flexibility of the muffler between the stay and the rear end plate must be large to allow the respective position adjustments. Need to be done.

However, if a large diameter through hole is formed in the stay or the rear end plate to configure this accommodation, not only is it difficult to adjust the position of the bolt or the like in the insertion direction, but also from the engine. When vibrations are transmitted, misalignment is likely to occur and there is room for improvement.

Therefore, it is conceivable to form long holes whose longitudinal directions are set in the directions orthogonal to each other with respect to the stay and the rear end plate. However, in this configuration, if the bolts or the like become loose, each of the orthogonal holes may be formed. The muffler is allowed to move in the direction of, and large vibrations are generated in the muffler, and the connection between the muffler and the exhaust pipe is easily damaged.

At the time of work, it may be necessary to slightly adjust the position of the muffler. In such a case, as described above, if the operation of loosening the bolts or the like allows the muffler to move in each of the orthogonal directions, there are two types. Position adjustment must be performed simultaneously in each of the directions, and rather accurate position adjustment cannot be performed. This also has room for improvement.

An object of the present invention is to provide a support structure that does not easily vibrate in a muffler even if a bolt or the like is loosened, and that can be accurately positioned.

[Means for solving the problem]

A feature of the present invention is that a muffler through which exhaust gas is sent from the engine through an exhaust pipe is arranged near the engine, and a first accommodation mechanism that allows position adjustment of a member on the engine side in a predetermined direction. A bracket is attached, and a muffler holding holder is attached to the bracket via a second accommodation mechanism that allows position adjustment in a direction orthogonal to the position adjustment direction of the first accommodation mechanism. When the muffler is lowered, the direction in which the movement of the muffler is allowed is set to a direction perpendicular to each of the direction in which the position adjustment is allowed by the first accommodation mechanism and the direction in which the position adjustment is allowed by the second accommodation mechanism. The effect is
The effects are as follows.

[Action]

According to the above feature, for example, when the mounting force of the bracket attached to the engine-side member is reduced, the muffler only vibrates only in the direction permitted by the first accommodation mechanism. When the mounting force of the holder to be mounted is reduced, the muffler only vibrates in the direction permitted by the second accommodation mechanism, and
When the holding force of the holder is reduced, the muffler vibrates only in the direction allowed by the holder, and it is possible to avoid a phenomenon in which the muffler vibrates largely without any limitation.

Also, the position adjustment direction of each of the first and second accommodation mechanisms, and
Since the directions in which the muffler is allowed to move when the holding force of the holder is reduced are set to directions orthogonal to each other,
When the muffler is attached, the muffler can be independently moved in a direction orthogonal to each other to position the three-dimensional direction with respect to any part.

[Effect of the invention]

Therefore, for example, even if one of the bolts or the like is loosened, the muffler does not vibrate greatly and a support structure capable of accurately positioning the muffler by adjusting the position in the three-dimensional direction is obtained. It was.

〔Example〕

 Hereinafter, embodiments of the present invention will be described with reference to the drawings.

As shown in FIG. 4, a vehicle body (2) having a pair of left and right crawler travel positions (1) is provided with a threshing device (3), a Glen hopper (4), and a front operation of the vehicle body (2). The harvester (5) is connected to the position substantially parallel to the part (A) so as to be able to move up and down to form a combine.

As shown in the figure, the driving section (A) includes a driving seat (6), a control tower (7), and an operation panel (9) having a plurality of operation levers (8). (6) is mounted on the upper surface of the hood (11) containing the engine (10).

As shown in FIGS. 1 and 3, the engine (10)
Is supported with respect to the body frame (2a) via a vibration isolating rubber (12), and the engine (10) is cooled on the outer side of the body via a dustproof net (13) formed on a bonnet (11). A radiator (14) to which the wind is supplied and a radiator fan (15) are arranged, and the intake manifold (16) is located at the rear side of the vehicle body (2) and is located at the front side of the vehicle body (2). Exhaust manifolds (17) are located on top of the engines (10) respectively.

As shown in FIGS. 1 to 3, a rear end plate (18) is provided on the output shaft (10a) side of the engine (10), and the rear end plate (18) is provided through the following structure. Muffler (19) is installed.

That is, the structure for mounting the muffler (19) includes a bracket (B) fixed to the rear end plate (18) with the bolt (20) and a holder fixed to the bracket (B) with the bolt (20). (C), a first plate (21) directly connected to the bracket (B) and the rear end plate (18), and a second plate (22) supporting the holder (C). One plate (21)
An elongated hole (21a) for bolt insertion is formed as a first accommodating mechanism with respect to the second plate (2).
It consists of a connecting plate (23) connected to 2) and a holding plate (24) for holding the muffler (19), and the longitudinal direction of the long hole (21a) and the longitudinal direction with respect to the connecting plate (23). An orthogonal slot (23a) is formed as a second accommodating mechanism.
In 4), the muffler (19) is clamped and supported in tight contact with the clamping bolt (20).

An exhaust pipe (25) is connected to an upper end of the muffler (19), and a flange (25a) connected to a flange portion (17a) of the exhaust manifold (17) is connected to an end of the exhaust pipe (25). Provided.

The holding plate (24) is configured so that the position of the muffler (19) can be adjusted substantially vertically by loosening the bolt (20).
The position of the muffler (19) can be adjusted in any three-dimensional direction by being set so as to be orthogonal to the direction of position adjustment by the long holes (21a) and (23a).

Then, when attaching the muffler (19), the flange portion (17a) of the exhaust manifold (17) and the flange portion (25a) of the exhaust pipe (25) are bolted in a state where all the connecting portions are temporarily fixed. (20), then tighten the second plate (22) and the connecting plate (23) with bolts (20).
Next, the clamping plate (24) is tightened with bolts (20), and finally the first plate (21), the rear end plate (18) and the first plate (21) are tightened with bolts (20). The installation of the muffler (19) is completed with no stress remaining on the exhaust pipe (25), the exhaust manifold (17) and the like.

(Another embodiment)

In addition to the above embodiment, for example, the present invention may be practiced by setting the longitudinal direction in the same direction for both members connecting the first and second position adjusting mechanisms to each other to form a long hole, or Can be implemented in a variety of ways, such as mounting the camera in a landscape orientation.

Note that, in the claims of the utility model registration, reference numerals are written for convenience of comparison with the drawings, but the present invention is not limited to the structure of the attached drawings by the entry.

[Brief description of the drawings]

The drawings show an embodiment of a muffler support structure according to the present invention, FIG. 1 is a side view of the support structure, FIG. 2 is a perspective view showing a state where a bracket and a holder are separated, and FIG. FIG. 4 is a plan view showing the arrangement of pipes and the like, and FIG. 4 is a side view of the front part of the combine. (10) ... engine, (18) ... member, (19) ... muffler, (21a) ... first accommodating mechanism, (23a) ... second accommodating mechanism, (25) ... exhaust pipe, ( B) Bracket,
(C) ... Holder.

Claims (1)

(57) [Scope of request for utility model registration] 1. A muffler (19) through which exhaust gas is sent from an engine (10) via an exhaust pipe (25) is disposed near the engine (10), and a predetermined amount is provided with respect to a member (18) on the engine side. The bracket (B) is mounted via a first accommodation mechanism (21a) that allows position adjustment in the direction, and the bracket (B) is attached to the bracket (B) in a direction perpendicular to the direction of position adjustment of the first accommodation mechanism (21a). A holder (C) for holding the muffler is mounted via a second accommodation mechanism (23a) capable of adjusting the position, and the direction in which the movement of the muffler (19) is allowed when the holding force of the holder (C) is reduced. The direction in which the position adjustment is allowed by the first accommodation mechanism (21a);
A muffler support structure that is set in a direction orthogonal to each of the directions in which position adjustment is allowed by the accommodation mechanism (23a).